We really try to get patients to have family take anything they don't absolutely need home with them. It's pointless to have a wallet during surgery or a hospital stay. We had one person bring an antique Waterford vase in. Yeah, ok. They were discharged, didn't pack it up when they left and it got lost. Fortunately, someone in housekeeping had found it and put it in a safe place and it was returned.
When a person comes in, we make a detailed list of their belongings, what they sent home, and what they chose to keep with them. Dentures go into a labeled denture cup, since they are the things that seem to go missing most often. We list jewelry a person chooses to wear, though we strongly suggest sending them home. When they are transferred or discharged we go over the belonging's list to make sure everything on the list goes with them.
If we lose something, or a patient says we lost something, it gets reported to security and we have to fill out a statement and relist the belongings we knew about to the best of our knowledge and the department pays for the missing item.
I once had an older woman who accused me of stealing 6 pairs of her underpants, 3 bras and an oak nightstand.